I originally had a paragraph of what I thought about the game written up but the site logged me out so I'll tl;dr it.
Single Player Campaign: Decent, nothing great or innovative, would have been better if the levels didn't end with a white flash before the main character's mission was over. Seriously, even the final level when I was expecting one of Call of Duty's "epic escape" moments, but instead it cuts to white and I don't get to do squat.
Multiplayer: I have yet to play because I normally dislike online gaming unless with friends.